Multiple Scattering Corrections To The Beer-Lambert Law
Multiple Scattering Corrections To The Beer-Lambert Law
复制标题
对比尔-朗伯定律的多重散射修正
DOI：
10.1117/12.935761
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
A. Zardecki
中科院分区：
文献类型：
--
作者：
A. Zardecki
多次散射的有效性的比尔-朗伯定律的影响进行了讨论，为广泛的颗粒尺寸参数和光学深度。为了预测接收的辐射功率的量，引入适当的校正项。对于大于或相当于辐射波长的粒子，小角近似是足够的，而对于小的密集堆积的粒子，有利地采用扩散理论。这两种方法被用于在稠密的气溶胶介质中的激光束传播的问题的上下文中。此外，通过使用二维有限元离散坐标运输代码获得的初步结果进行了说明。模拟了激光在雾、云、雨和气溶胶云中传输的多重散射效应。
The effect of multiple scattering on the validity of the Beer-Lambert law is discussed for a wide range of particle size parameters and optical depths. To predict the amount of received radiant power, appropriate correction terms are introduced. For particles larger than or comparable to the wavelength of radiation the small-angle approximation is adequate, whereas for small densely packed particles the diffusion theory is advantageously employed. These two approaches are used in the context of the problem of laser beam propagation in a dense aerosol medium. In addition, preliminary results obtained by using a two-dimensional finite element discrete-ordinates transport code are described. Multiple scattering effects for laser propagation in fog, cloud, rain and aerosol cloud are modeled.